This is an enclosure for a 2 player SNES daemonbite adapter.

The parts I used: SNES plugs (180 degree option) - https://www.aliexpress.com/item/32838396935.html?spm=a2g0s.9042311.0.0.58da4c4dTeZUuY Arduino - https://www.amazon.com/gp/product/B019SXN84E/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 USB cable - https://www.amazon.com/gp/product/B07YBGJCPW/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1 4x M3x6mm screws

The snes plugs are a tight fit and will actually snap into place. The arduino is held well on its side by shallow slots in the top and bottom. You will likely want to print the bottom with supports for the screw holes.

The pins on these aliexpress snes plugs don't always go into the snes controller very well. I actually removed the pins and chamfered/sharpened the tips with a dremel and now the controllers plug in very smooth.